问题
选择题
Tom is very happy in China during this period because his Chinese ________ every day.
A．has improved
B．is improving
C．improved
D．is improved
答案
答案：B
考查动词时态。句意：在中国的这段日子Tom很高兴，因为他的汉语水平天天在提高。用现在进行时表示现阶段正在进行的动作。